Vsm 벡터공간모델

Contents ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Contents (Cont.) ,[object Object],[object Object],[object Object]

2.1 Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

2.2 A Taxonomy of IR Models Set Theoretic Fuzzy Extended Boolean Algebraic Generalized Vector Lat. Semantic Index Neural Networks Probabilistic Inference Network Belief Network U s e r T a s k Retrieval: Ad hoc Filtering Browsing Classic Models boolean vector probabilistic Structured Models Non-Overlapping Lists Proximal Nodes Browsing Flat Structure Guided Hypertext

A Taxonomy of IR Models (Cont.) ,[object Object],[object Object],Logical View of Documents U S E R T A S K Structure Guided Hypertext Flat Hypertext Flat Browsing Structured Classic Set theoretic Algebraic Probabilistic Classic Set theoretic Algebraic Probabilistic Retrieval Full Text + Structure Full Text Index Terms

2.3 Retrieval ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

2.4 A Formal Characterization of IR Models ,[object Object]

2.5 Classic Information Retrieval ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

2.5.1 Basic Concepts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Basic Concepts (Cont.) ,[object Object],[object Object],[object Object],[object Object]

2.5.2 Boolean Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Boolean Model (Cont.) ,[object Object],[object Object],k a k b k c

Boolean Model (Cont.) 병렬 프로그램 시스템 1 1 0 … 0 1 1 … 0 0 1 … 1 0 1 … 병렬 프로그램 시스템 … 색인어 1 0 0 1 유사도 004 003 002 001 문서

2.5.3 Vector model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Vector model (Cont.) ,[object Object]

Vector model (Cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Vector model (Cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Vector model (Cont.) ,[object Object],[object Object],[object Object]

Vector model (Cont.) .176 .176 .477 0 0 .176 .477 .477 .477 .176 0 idf truck shipment silver of in gold fire delivery damaged arrived a Term

Vector model (Cont.) Hence, the ranking would be D 2 , D 3 , D 1 Document vectors Not normalized .176 0 .477 0 0 .176 0 0 0 0 0 Q .176 .176 0 0 0 .176 0 0 0 .176 0 D 3 .176 0 .954 0 0 0 0 .477 0 .176 0 D 2 0 .176 0 0 0 .176 .477 0 .477 0 0 D 1 t 11 t 10 t 9 t 8 t 7 t 6 t 5 t 4 t 3 t 2 t 1

Vector model (Cont.) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Vsm 벡터공간모델

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